ML19351G419

LER 81-004/03L-0:on 810115,high Residual Chlorine Levels Found in Circulating Water Sys Liquid Effluent Sample.Cause Unknown.Subsequent Samples Normal

ML19351G419
Person / Time
Site:	Fort Saint Vrain
Issue date:	02/13/1981
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19351G395	List: ML19351G394 ML19351G419
References
LER-81-004-03L, LER-81-4-3L, NUDOCS 8102230660
Download: ML19351G419 (4)

Text

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3 6G 61 CCCNET NUMBER EVENT CESCRIPTICN AND P ACB ASLE CONSEOUENCES h lo!2) 1 During a maintenance shutdown oeriod. operations nerscnnel chlorinated the circu- I y a i3 l lating water system and collected the plant liauid effluent sanple as reautred. The l l ,3 j cj l sample indicated that the residual chlorine was in excess of the LCO NR 1.1 limit. I

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! i i a l l Chlorine censumotion in the circulatine water syste, is a comlex crocess deoanden d 3 ii!1upon several variables. Af ter the high residual chlorine level in the clant licuid I

,,,; l effluent, the plant chemist checked the chlorination system and could not identifv i

, ,3; l any cause for the high chlorine level. Subsequent chlorination and samples did not l

i,2 ;  ; reveal a recurrence of the high chlorine level. l

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